// https://zhuanlan.zhihu.com/p/439004664

//  babel-plugin-transform-remove-console

const proPlugins = []
// 如果当前是测试环境或者是生产环境，则使用去掉 console 的插件
if (process.env.NODE_ENV === 'production') {
  proPlugins.push('transform-remove-console')
}

module.exports = {
  presets: [
    // https://github.com/vuejs/vue-cli/tree/master/packages/@vue/babel-preset-app
    '@vue/cli-plugin-babel/preset'
  ],
  'env': {
    'development': {
      // babel-plugin-dynamic-import-node plugin only does one thing by converting all import() to require().
      // This plugin can significantly increase the speed of hot updates, when you have a large number of pages.
      // https://panjiachen.github.io/vue-element-admin-site/guide/advanced/lazy-loading.html
      'plugins': ['dynamic-import-node']
    }
  },
  plugins: [...proPlugins]
}
